8

我正在使用 HttpClient。我正在使用网络表单参数发布。其中一个值（不是名称）是瑞典语外来字符 ö ，#246；ö ASCII：拉丁文小写字母 O 元音变音

手动，IE、Firefox 和 Chrome 都将这个字符转换为 S%F6k，一切正常。但是 VS 2012 C# 版本将它（通过 FormUrlEncodedContent(dict)）转换为 %C3%B6

有没有办法告诉 VS 2012 将其转换为友好的 S%F6k（并且仍然使用 HttpClient）？

我附上了大部分代码，这可能对其他人有帮助（cookies、代理等......）

// Create Handler
var handler = new HttpClientHandler();

// Cookies
var cc = new CookieContainer();
handler.CookieContainer = cc;

// Proxy - for fiddler
WebProxy proxy = new WebProxy();
proxy.Address = new Uri("http://localhost:8888");
handler.Proxy = proxy;

// Create the client
var client = new HttpClient(handler);

var request4 = new HttpRequestMessage();

client.DefaultRequestHeaders.Clear();
client.DefaultRequestHeaders.Add("Accept", "text/html, application/xhtml+xml, */*");
client.DefaultRequestHeaders.Add("Accept-Encoding", "gzip, deflate");
client.DefaultRequestHeaders.Add("Accept-Language", "en-US,en;q=0.8,sv-SE;q=0.5,sv;q=0.3");
client.DefaultRequestHeaders.Add("User-Agent", "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0)");

// Form Data
var dict4 = new Dictionary<string, string>
{
    { "page", "kantlista" },
    { "kod", "A0004n" },
    { "termin", "H12" },
    { "anmkod", "17113" },
    { "urval", "ant" },
    { "listVal", "namn" },
    { "method", "Sök" } // S%F6k
}; // dict

request4.Content = new FormUrlEncodedContent(dict4);

var value4 = new FormUrlEncodedContent(dict4);
string uri4 = "https://www.ltu.se/ideal/ListaKursant.do";
var response4 = await client.PostAsync(uri4, value4);
response4.Headers.Add("Cache-Control", "no-cache")
response4.EnsureSuccessStatusCode();
string responseBody4 = await response4.Content.ReadAsStringAsync();
4

3 回答 3

11

FormUrlEncodedContent类以 utf8 编码对表单数据进行编码。
尝试ByteArrayContent上课并HttpUtility.UrlEncode(String, Encoding)进行编码。

于 2012-12-12T04:00:12.457 回答
1

只是为了完成@TylerTsai 的回答

代替

var dict = new Dictionary<string, string>();
dict.Add("param1", value1);
dict.Add("param1", value2);

var response = await httpClient.PostAsync(endpoint, new FormUrlEncodedContent(dict));

和

 string postData = HttpUtility.UrlEncode(
       $"param1={value1}&param2={value2}",Encoding.GetEncoding(myEncoding));
 byte[] data = System.Text.Encoding.GetEncoding(myEncoding).GetBytes(postData);
 ByteArrayContent content = new ByteArrayContent(data);
 content.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
 
 var response = await httpClient.PostAsync(endpoint, content);
于 2020-08-11T13:20:53.200 回答
0

通过这个小调整，您可以保留您的字典

   var postEncoding= "ISO-8859-1";
    var dict4 = new Dictionary<string, string>
    {
        { "page", "kantlista" },
        { "kod", "A0004n" },
        { "termin", "H12" },
        { "anmkod", "17113" },
        { "urval", "ant" },
        { "listVal", "namn" },
        { "method", "Sök" } // S%F6k
    }; // dict
    
    
string postData = HttpUtility.UrlEncode(string.Join("&", dict4.Select(kvp => $"{kvp.Key}={kvp.Value}")) ,Encoding.GetEncoding(postEncoding));
    
byte[] data = Encoding.GetEncoding(postEncoding).GetBytes(postData);
ByteArrayContent content = new ByteArrayContent(data);
content.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
     
var response = await httpClient.PostAsync(endpoint, content);
于 2021-10-11T15:16:00.267 回答